Table 3 a Description of data fields associated with each wild sampling event [all_wild_sample_events]. b Description of data fields associated with each wild fish that was assessed for sea louse infestation [all_wild_fish_lice].

From: Sea lice infestation dataset for wild and farmed salmon populations on the Pacific coast of Canada (2001–2023)

Field

Description

event_id

A unique ID associated with each wild sampling event

sampledate

Date when the sampling event took place (dd/mm/yyyy)

dfozone

One of seven fish health zone codes where the event took place. There were also a group of events collected by the Hakai Institute at various points along the Johnstone Straight. These do not fit neatly into a single existing sub-zone and so this field has been left blank for those events, while their ‘region’ (see next field) attribute has been noted as “BA/DI border”.

region

One of fourteen areas along the BC coast. (Some DFO zones have only one region, e.g. {3.4} = {Port Hardy}, while others have several, e.g. {2.4} contains {Esperanza} {Espinosa} {Muchalet} {Quatsino}.)

sample_site

A textual name that was used to describe the specific sampling site

latitude

Latitude of sampling location in decimal degrees (to 4 decimal places)

longitude

Longitude of sampling location in decimal degrees (to 4 decimal places)

source

One of ten textual values representing the programme or organisation responsible for the sampling event. (See Table S1 for details relating to each of these programmes and their protocols.)

source_code

A short-hand label by which to refer to the ‘sources’ noted above.

protocol

One of three labels {Lethal} {Non-lethal} {Mixed} used to indicate the host capture and sea lice enumeration method adopted for a particular event. (See Table S1 for further detail.)

Field

Description

event_id

ID that associates each fish with the event in which it was sampled

fish_id

A unique ID associated with each wild fish that was sampled

length

The measured fork length for each fish (in mm)

weight

The weight for each fish (in g)

height

The height (vertical measurement from the bottom of the belly to the top of the back) for each fish (in mm)

fish_species

One of eight fish species designation to which each fish was allocated

lep_cop

Number of sea lice identified as L. salmonis species at copepodid stage

lep_chal

Number of sea lice identified as L. salmonis species at chalimus stage

lep_motile

Number of sea lice identified as L. salmonis species at motile stage

lep_unknown

Number of sea lice identified as L. salmonis species but unidentified stage

cal_cop

Number of sea lice identified as Caligus species at copepodid stage

cal_chal

Number of sea lice identified as Caligus species at chalimus stage

cal_motile

Number of sea lice identified as Caligus species at motile stage

cal_unknown

Number of sea lice identified as Caligus species but unidentified stage

unknown_cop

Number of sea lice at copepodid stage but not identified to species

unknown_chal

Number of sea lice at chalimus stage but not identified to species

unknown_motile

Number of sea lice at motile stage but not identified to species

unknown_unknown

Number of sea lice at an unidentified stage and not identified to species